Ansel was a precocious child who loved nature. Which word listed below would best replace the underlined word in the sentence above?
a gifted
c. ugly
b. mean
d. happy

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.

Sperm are ejaculated from the corpora cavernosa of the penis. true or false